A laboratory course in experimental physics (1896)
Loudon, W. J. (William James), McLennan, John Cunningham, joint author · New York and London, Macmillan and Co. · leaf 207
Fig. S. 192 EXPERIMENTAL PHYSICS. in each case, and from these angles the inclination at the pointof observation is determined. The disposition is that shewn in Fig. 6. AHB representsthe magnetic meridian, AEB a plane making an angle 6 withit, and ACB a plane at right angles to AEB. Dx and Z>2… … >-? Fig. 6. denote the angles made by the needle with the zero diameterof the vertical circle when it is at rest in each of these positions. If D is the true value of the inclination at points in theimmediate neighbourhood of the observing station, and F is theresultant intensity of the earths…
Physics
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